Stella is a portable emulator of the old Atari 2600 video-game console. You can play most Atari 2600 games with it.

Stella's features include: * emulation of Atari 2600 joysticks, keyboards, paddles and driving controllers using the host system's input peripherals; * emulation of trackballs, joysticks, booster grips, driving controllers and the Amiga Mouse using the host system's mouse; * support for real Atari 2600 controllers using the Stelladaptor, 2600-daptor or 2600-daptor II; * support for real Atari 7800 controllers using the 2600-daptor II; * support for the speech portion of a real AtariVox device; * support for Supercharger single-load and multi-load games; * emulation of CRT TV features, including texturing, colour bleed, RF noise and phosphor burn-off (requires OpenGL).

An extensive debugger is included, with the Distella disassembler.

Note that this is not isee systems' STELLA modeling, simulation and analysis tool.